Socket client receive data garbled

[xertechx]

I have made a program to asynchronously connect to 20 barcode readers via system.net.sockets. I can send and receive data from the reader but the problem is the information that comes back is broken or incomplete. I am new to this so I am wondering what I am missing. Here is all of my receive code


Connection:

       readerSock1 = New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
        Dim ipAddress1 As IPAddress = IPAddress.Parse(arrIP(1 - 1))
        Dim ipEndPoint1 As IPEndPoint = New IPEndPoint(ipAddress1, arrPort(1 - 1))
        readerSock1.BeginConnect(ipEndPoint1, New AsyncCallback(AddressOf OnConnect1), Nothing)

    Private Sub OnConnect1(ByVal ar As IAsyncResult)
        Dim msg1 As String
        Try
            readerSock1.EndConnect(ar)
            readerSock1.BeginReceive(byteData1, 0, byteData1.Length, SocketFlags.None, _
                                      New AsyncCallback(AddressOf OnRecieve1), readerSock1)
        Catch ex As Exception
            msg1 = ex.Message
        End Try
        RTBappend(msg1)
    End Sub

Receive:

    Private Sub OnRecieve1(ByVal ar As IAsyncResult)
        Dim readersock1 As Socket = ar.AsyncState
        'readersock1.EndReceive(ar)
        Dim bytesRec As Byte() = byteData1
        Dim message As String = System.Text.ASCIIEncoding.ASCII.GetString(bytesRec)
        Read1(message)
        readersock1.BeginReceive(byteData1, 0, byteData1.Length, SocketFlags.None, _
                                New AsyncCallback(AddressOf OnRecieve1), readersock1)
    End Sub

    Delegate Sub _Read1(ByVal msg As String)
    Private Sub Read1(ByVal msg As String)
        If InvokeRequired Then
            Invoke(New _Read1(AddressOf Read1), msg)
            Exit Sub
        End If

        lblStation1.Text = msg
    End Sub

The reader is constantly sending information, so my guess is the receive doesnt know when to start and stop? attached are what I get from the reader. In Hyper Terminal the information comes across OK, but in my program you can see station 2 does not look the same as hyper terminal.